20528195 has 4 divisors (see below), whose sum is σ = 24633840. Its totient is φ = 16422552.

The previous prime is 20528171. The next prime is 20528203. The reversal of 20528195 is 59182502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20528195 - 2¹² = 20524099 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052815 + ... + 2052824.

It is an arithmetic number, because the mean of its divisors is an integer number (6158460).

Almost surely, 2^20528195 is an apocalyptic number.

20528195 is a deficient number, since it is larger than the sum of its proper divisors (4105645).

20528195 is an equidigital number, since it uses as much as digits as its factorization.

20528195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105644.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 20528195 is about 4530.8051160914. The cubic root of 20528195 is about 273.8105986791.

The spelling of 20528195 in words is "twenty million, five hundred twenty-eight thousand, one hundred ninety-five".